Extension-table



F; W. NYE.

EXTENSION TABLE.

Patented Jan. 11, 1887 v JI'I'IJESSIEIS 7 Jr/Z INVENTOR TTORNEYS.

UNITED STATES PATENT -O FIcE.

FREDERICK w. NYE, OF COLUMBUS, OHIO.

I EXTENSlON-TABLEw Ernest-rennet: ro n' n of Letters Patent No. 355,945. dated January '11. 1887.

4 i I Application filed August 16, 1386. Serial No. 211,956. (X model.)

To all whom it may concern: I

Be it known that I, FREDERICK \V. NYE, of

Columbus, in the county of Franklin and State of- Ohio, have invented a new and useful Improvement'in Extensiol'i-Tables, of which the following is a specification.

lllyinvention consists in certain new and useful improvementsin the slides and slidebars of extension-tables,which will be hereinafter fully described and claimed.

Referring to the accompanying drawings, Figure 1 is a perspective view of the slidebars of anextension-table in which my invention is embodied,showing the bars open or ex-' 1 5 tended. Fig; 2 is adetail view of one of the metal slides. Fig. 3 is a plan view of the inner adjacent sides of the slide bars. Fig. 4 is.

alongitudinal vertical central view of the slidebars in their closed position; and Fig. 5 is a vertical cross-sectional view taken on the plane indicated by line at m, Fig. 4, of the drawings.

The same letters of reference indicate corresponding parts in all the figures.

Referring to the several parts by letter, A represents the upper and B the lower slidebar of the-series of an extension-table, these bars being formed with the longitudinal side grooves, 0 O, ata suitable distance-from their edges, asshown, and with the vertical end grooves, D, and horizontal end grooves, E, communicating with the said vertical grooves. All of these grooves are cut by saws running at a high rateot speed, making clean smooth cuts through knots or crossgrained timber, leaving the edges as smooth as in clear lumber, each section being brought to its proper width and thickness at onecutting.

F indicates the metal slides, each of which is formedwiththe vertical stem F and. the L-shaped portion F, as shown, thevertical steins'F'fitting in the vertical end'grooves, D, andthe stem of the L in the horizontal end grooves, E, the lips'l of the slides of the upper sli'debar fitting". and sliding in the upper 5 longitudinalside groove, 0, of the bar next beneath, while the lips of the slides at the other end of the lower slide-bar fit and slide in the lower longitudinal side groove of the upper bar, as shown. lhe s'ide'grooves'at one end of each slide-bar -thatend inwhich the metal slides are secured-are filled with close-fitting strips G G of wood, which are firmly glued therein, making the slide-bars at these points as solid and strong as if the grooveshad not been cut, thereby preventing the possibilityof the tongues formed by these side grooves being, torn off or split by any sudden wrench while the table is extended. These strips are of such a length that when the bars are extended the lips of the metal slides arenearly in contact with them, and if the central stops, which will be hereinafter described, become loose or break,these strips will take the strain of the lips of the slides striking against them, and thus prevent the bars from coming apart 65 or the table from breaking down.

The stems F of the metal slides are formed with the vertical top slats, F, andthe slides are secured in position in the ends of the slidebars by means of the wooden pegs or keys F, which are glued in and serve both to make the ends of the slide-bars stronger and to hold the metal slides in position, fitting also into vertical apertures in the-ends of t'heslide-bars, as shown in Fig. 5 of the, drawings. a One of the prongs forming in the stems of the metal slides extends up about one-fourth of an inch above the upper face of the l'ower'slide-bar, fitting into short recesses I in the lower side of the rear end of the upper slide-bar, A, andthus acting as back-stops, when the frames are closed, to prevent the upper bars from being pushed too far back, dispensing with the slats and pins used in other slides.

The adjacent faces of the upper and lower slide-bars are formed with the inclined recesses KK and the circular recesses LL in line with the said recesses, these recesses being arranged as clearly shown in,Figs.'3 and 4 of the drawings; and in these deep circular recesses'are placed the spiral springs M M, on which rest the movable pins N N, the spring-actuated'pin of one bar fitting and sliding in the inclined recess of the other.

It will be seen that when the frames or sliding bars are opened or drawn apart, that the spring-actuated pins will slide in the inclined recesses until they come incontact with the vertical ends of the said recesses, when they will stop the bars at theproper'point,and also too prevent any strain coming against the metal slides when extending the table. It will be seen that these central springactuated pins, sliding in the inclined recesses with a steady pressure, materiallystrengthen the connection between the sliding bars. The pressure of the springs serves to separate the adjacent faces of the sliding bars and prevents them from coming in contact, "thereby reducing the friction to the minimum, the springs also yielding, so as to prevent the bars from binding, permitting perfectly free movement of the said bars, and allowing the table to be extended without any of that rattling noise made in opening or closing other tables. 1

It will be seen that'as the table is closed the springactuated pins will travel up the inclined recesses, thus bearing with greater pressure against thebars, reducing the momentum of the frames, and causing the table to close without the least shock or jar. The central connection-that is;thespring-actuated pins hearing in the inclined rccessestakes up all. vertical strain, While theoutside connectionthe metal slidesfitting around the tongues and in the side grooves of the bdlSfitQktS up or holds all horizontal or lateral strain, this arrangement causing the slidehars and the table to open and close smoothly, easily, and noise lessly.

It will be seen that the side portions of the metal slides are ofsnl'ticient length to prevent the ad jacentfaees of the slide-bars coming intocontact, all thefriction-filling on the inwardlybent lips F which slide in the grooves,and the spring-actuated pins, thus reducing friction between the slide-bars to the minimum.

From theibregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of my invention will be readily understood. It will be seen that the slide-bars can be easily and cheaply man utactured by inexpensive machi ncry at aconsiderablc saving of time, labor, and l material, the work on the slide -bars .being mostly done with ordinary circular saws. My invention is simple, strong,and durable in construction, and exceedingly ct'licient in its 0peratiou. By cutting the grooves in the sides of the slide-bars much smaller bars may be used than heretofore, as the middle sections or bars are notweakened as they are where the main groove is cut centrally. The metal slides are si mplein construction and interchangeable.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. The herein-described slide F, consisting of the vertical stein F, having slot F", the L- shaped. portion F and the lip F, as specified.

The combination, with the slide-bars having the. longitudinal side grooves, the vertical end grooves, and the horizontal end grooves, of the wooden strips glued or otherwise secured in a portion ofthe said side grooves and the metal slides, substantially as and for the purpose herein set forth. i 3. The combination,with the slide barshavi1 g recesses in their adjacent faces, of springpressed pins for pressing the barsapart and limiting the movement of the same, substantially as described.

at. The co1nbination,with the slide-bars having inclined and circular recesses in their adjacent faces, of springs in the circular recesses and pins resting on the said springs, substantially as described.

5. The combination, with the slid e"-'bars having longitudinal sid'e grooves, O, the vertical end grooves, D, and the horizontal end grooves,

"E, of the slidesl each consisting of the vertical stem Ff, having slot F, the L-shaped por tion F and the lip F", substantially as herein shown antLdescribed.

FREDERICK \V. NYE. \Vitnesscs:

EDMUND SMITH, 1%. L. hIC'CABE.

It is hereby certified that Letters Patent No. 355,945, granted J anuary 11 1887, upon the application of Frederick W. Nye, of Columbus, Ohio, for an improvement in Extension Tables, was erroneously issued to said N ye, that the said Letters Patent should have been issued to said Nye and J. C. Norris, of same place, said Norris being the :'\ssignee of one-half interest in said invention; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Of'fice.

Signed, countersig'ued, and sealed this 1st day of Febrilary, A. 1887.

[SEAL] 1). L. HAWKINS,

(Jenn tersign ed:

R. B. ANQE,

Acting Commissioner of Patents.

Acting Secretary of the Interior. 

